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- {"version":3,"file":"fetch.js","sources":["../../../src/common/fetch.ts"],"sourcesContent":["import {\n SEMANTIC_ATTRIBUTE_SENTRY_ORIGIN,\n getClient,\n getCurrentScope,\n getDynamicSamplingContextFromClient,\n getDynamicSamplingContextFromSpan,\n getIsolationScope,\n hasTracingEnabled,\n setHttpStatus,\n spanToTraceHeader,\n startInactiveSpan,\n} from '@sentry/core';\nimport type { Client, HandlerDataFetch, Scope, Span, SpanOrigin } from '@sentry/types';\nimport {\n BAGGAGE_HEADER_NAME,\n dynamicSamplingContextToSentryBaggageHeader,\n generateSentryTraceHeader,\n isInstanceOf,\n} from '@sentry/utils';\n\ntype PolymorphicRequestHeaders =\n | Record<string, string | undefined>\n | Array<[string, string]>\n // the below is not preicsely the Header type used in Request, but it'll pass duck-typing\n | {\n // eslint-disable-next-line @typescript-eslint/no-explicit-any\n [key: string]: any;\n append: (key: string, value: string) => void;\n get: (key: string) => string | null | undefined;\n };\n\n/**\n * Create and track fetch request spans for usage in combination with `addInstrumentationHandler`.\n *\n * @returns Span if a span was created, otherwise void.\n */\nexport function instrumentFetchRequest(\n handlerData: HandlerDataFetch,\n shouldCreateSpan: (url: string) => boolean,\n shouldAttachHeaders: (url: string) => boolean,\n spans: Record<string, Span>,\n spanOrigin: SpanOrigin = 'auto.http.browser',\n): Span | undefined {\n if (!hasTracingEnabled() || !handlerData.fetchData) {\n return undefined;\n }\n\n const shouldCreateSpanResult = shouldCreateSpan(handlerData.fetchData.url);\n\n if (handlerData.endTimestamp && shouldCreateSpanResult) {\n const spanId = handlerData.fetchData.__span;\n if (!spanId) return;\n\n const span = spans[spanId];\n if (span) {\n if (handlerData.response) {\n setHttpStatus(span, handlerData.response.status);\n\n const contentLength =\n handlerData.response && handlerData.response.headers && handlerData.response.headers.get('content-length');\n\n if (contentLength) {\n const contentLengthNum = parseInt(contentLength);\n if (contentLengthNum > 0) {\n span.setAttribute('http.response_content_length', contentLengthNum);\n }\n }\n } else if (handlerData.error) {\n span.setStatus('internal_error');\n }\n span.end();\n\n // eslint-disable-next-line @typescript-eslint/no-dynamic-delete\n delete spans[spanId];\n }\n return undefined;\n }\n\n const scope = getCurrentScope();\n const client = getClient();\n\n const { method, url } = handlerData.fetchData;\n\n const span = shouldCreateSpanResult\n ? startInactiveSpan({\n name: `${method} ${url}`,\n onlyIfParent: true,\n attributes: {\n url,\n type: 'fetch',\n 'http.method': method,\n [SEMANTIC_ATTRIBUTE_SENTRY_ORIGIN]: spanOrigin,\n },\n op: 'http.client',\n })\n : undefined;\n\n if (span) {\n handlerData.fetchData.__span = span.spanContext().spanId;\n spans[span.spanContext().spanId] = span;\n }\n\n if (shouldAttachHeaders(handlerData.fetchData.url) && client) {\n const request: string | Request = handlerData.args[0];\n\n // In case the user hasn't set the second argument of a fetch call we default it to `{}`.\n handlerData.args[1] = handlerData.args[1] || {};\n\n // eslint-disable-next-line @typescript-eslint/no-explicit-any\n const options: { [key: string]: any } = handlerData.args[1];\n\n // eslint-disable-next-line @typescript-eslint/no-explicit-any, @typescript-eslint/no-unsafe-member-access\n options.headers = addTracingHeadersToFetchRequest(request, client, scope, options, span);\n }\n\n return span;\n}\n\n/**\n * Adds sentry-trace and baggage headers to the various forms of fetch headers\n */\nexport function addTracingHeadersToFetchRequest(\n request: string | unknown, // unknown is actually type Request but we can't export DOM types from this package,\n client: Client,\n scope: Scope,\n options: {\n headers?:\n | {\n [key: string]: string[] | string | undefined;\n }\n | PolymorphicRequestHeaders;\n },\n requestSpan?: Span,\n): PolymorphicRequestHeaders | undefined {\n // eslint-disable-next-line deprecation/deprecation\n const span = requestSpan || scope.getSpan();\n\n const isolationScope = getIsolationScope();\n\n const { traceId, spanId, sampled, dsc } = {\n ...isolationScope.getPropagationContext(),\n ...scope.getPropagationContext(),\n };\n\n const sentryTraceHeader = span ? spanToTraceHeader(span) : generateSentryTraceHeader(traceId, spanId, sampled);\n\n const sentryBaggageHeader = dynamicSamplingContextToSentryBaggageHeader(\n dsc ||\n (span ? getDynamicSamplingContextFromSpan(span) : getDynamicSamplingContextFromClient(traceId, client, scope)),\n );\n\n const headers =\n options.headers ||\n (typeof Request !== 'undefined' && isInstanceOf(request, Request) ? (request as Request).headers : undefined);\n\n if (!headers) {\n return { 'sentry-trace': sentryTraceHeader, baggage: sentryBaggageHeader };\n } else if (typeof Headers !== 'undefined' && isInstanceOf(headers, Headers)) {\n const newHeaders = new Headers(headers as Headers);\n\n newHeaders.append('sentry-trace', sentryTraceHeader);\n\n if (sentryBaggageHeader) {\n // If the same header is appended multiple times the browser will merge the values into a single request header.\n // Its therefore safe to simply push a \"baggage\" entry, even though there might already be another baggage header.\n newHeaders.append(BAGGAGE_HEADER_NAME, sentryBaggageHeader);\n }\n\n return newHeaders as PolymorphicRequestHeaders;\n } else if (Array.isArray(headers)) {\n const newHeaders = [...headers, ['sentry-trace', sentryTraceHeader]];\n\n if (sentryBaggageHeader) {\n // If there are multiple entries with the same key, the browser will merge the values into a single request header.\n // Its therefore safe to simply push a \"baggage\" entry, even though there might already be another baggage header.\n newHeaders.push([BAGGAGE_HEADER_NAME, sentryBaggageHeader]);\n }\n\n return newHeaders as PolymorphicRequestHeaders;\n } else {\n const existingBaggageHeader = 'baggage' in headers ? headers.baggage : undefined;\n const newBaggageHeaders: string[] = [];\n\n if (Array.isArray(existingBaggageHeader)) {\n newBaggageHeaders.push(...existingBaggageHeader);\n } else if (existingBaggageHeader) {\n newBaggageHeaders.push(existingBaggageHeader);\n }\n\n if (sentryBaggageHeader) {\n newBaggageHeaders.push(sentryBaggageHeader);\n }\n\n return {\n ...(headers as Exclude<typeof headers, Headers>),\n 'sentry-trace': sentryTraceHeader,\n baggage: newBaggageHeaders.length > 0 ? newBaggageHeaders.join(',') : undefined,\n };\n 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